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Re: [dm-devel] ERROR: asr: reading /dev/sdo[Input/output error]



On 12/07/2011 04:21 PM, Christian May wrote:
Hi,

I've setup an IBM HS21 blade with RHEL6.1. The OS installed on a DS5100 storage server (SAN boot).
During booting I'm recognizing the following messages:

Starting udev: OK
Setting hostname elm8a203.beaverton.ibm.com:
ERROR: asr: reading /dev/sdo[Input/output error]
ERROR: ddf1: reading /dev/sdo[Input/output error]
ERROR: ddf1: reading /dev/sdo[Input/output error]
ERROR: hpt37x: reading /dev/sdo[Input/output error]
ERROR: hpt45x: reading /dev/sdo[Input/output error]
ERROR: isw: reading /dev/sdo[Input/output error]
ERROR: jmicron: reading /dev/sdo[Input/output error]
ERROR: lsi: reading /dev/sdo[Input/output error]
ERROR: nvidia: reading /dev/sdo[Input/output error]
ERROR: pdc: reading /dev/sdo[Input/output error]
...

ERROR: sil: reading /dev/sdf[Input/output error]
ERROR: via: reading /dev/sdf[Input/output error]
ERROR: asr: reading /dev/sde[Input/output error]
ERROR: ddf1: reading /dev/sde[Input/output error]
ERROR: ddf1: reading /dev/sde[Input/output error]
ERROR: hpt37x: reading /dev/sde[Input/output error]
ERROR: hpt45x: reading /dev/sde[Input/output error]
ERROR: isw: reading /dev/sde[Input/output error]
ERROR: jmicron: reading /dev/sde[Input/output error]
ERROR: lsi: reading /dev/sde[Input/output error]
ERROR: nvidia: reading /dev/sde[Input/output error]
ERROR: pdc: reading /dev/sde[Input/output error]
ERROR: pdc: reading /dev/sde[Input/output error]
ERROR: pdc: reading /dev/sde[Input/output error]
ERROR: pdc: reading /dev/sde[Input/output error]
ERROR: pdc: reading /dev/sde[Input/output error]
ERROR: pdc: reading /dev/sde[Input/output error]


etc.

All those device /dev/sd...are part of a multipath devices, e.g.:


mpathh (3600a0b800047e4e4000008b54ebc91c3) dm-6 IBM,1818      FAStT
size=25G features='1 queue_if_no_path' hwhandler='1 rdac' wp=rw
|-+- policy='round-robin 0' prio=6 status=active
| `- 3:0:3:0 sdh 8:112 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  `- 4:0:2:0 sdo 8:224 active ghost running
mpathg (3600a0b800011573a00006da14a648a22) dm-0 IBM,1815      FAStT
size=4.8G features='1 queue_if_no_path' hwhandler='1 rdac' wp=rw
|-+- policy='round-robin 0' prio=6 status=active
| `- 4:0:1:1 sdn 8:208 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  `- 3:0:0:1 sdc 8:32  active ghost running


OS is booting but how can I get rid of those messages? Is it udev-rules related?

You have to deactivate dmraid with the "nodmraid" kernel command line option in order to avoid its scanning leading to the above error messages.

Regards,
Heinz


Regards,

Christian May (IBM)



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Heinz Mauelshagen                               +49 2626 141200
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